Engine Stamp Decode question

[turbo36]

I'm looking at a 68' 440hp motor and it has the letters "DW" on the engine stamp pad. Anybody know what that means?

thanks, Bob

 

[Pops1967GTX]

http://www.moparengineswest.com/Stampings.htm


SERIES:
S = 1962
T = 1963
V = 1964
A = 1965
B = 1966
C = 1967
D = 1968
E = 1969
F = 1970
G = 1971
H = 1972
J = 1973
4T = 1974
5T = 1975
6T = 1976
7T = 1977
8T = 1978

OTHER STAMPINGS:
Diamond = 0.008-in. oversize tappets
Maltese Cross = 0.001-in. undersized crankshaft
Maltese Cross and an X = 0.010 undersized crankshaft
A = 0.020-in. oversized cylinder bore
B = 0.010-in. undersized main and rod bearings
E = cast crankshaft
H = standard 4bbl
HP = high performance
LC = low compression
O.S. = 0.005 oversized valve stems
P = premium fuel recommended
R = regular grade fuel may be used
S = special engine
WT or TW = water test
X = oversized valve guides

ASSEMBLY PLANTS:
K = Toluca
PT = Trenton
M = Mound Road
T = Trenton (400 and 440 only)
MV or MN = Marysville

 

[69Coronetrt]

I'm looking at a 68' 440hp motor and it has the letters "DW" on the engine stamp pad. Anybody know what that means?

thanks, Bob

Can you post a picture for a more accurate answer?

 

[turbo36]

Can you post a picture for a more accurate answer?

The picture I have is not in focus. I will get a better one in a couple of days.